Ok, this is mostly for oldschoolhero, but anyone with 40K experience is welcome. Now I have a chance to buy some Necron and a Codex pretty cheap. I have heard nothing but good things about the Necron, except that they suck up points. I have the same offer with some Tau. Which one would be better?

Just to for those of you who haven't seen the result show...SPOILER ALERT! I was afraid with the show's history of having my favorite person get fifth place each year (Christina Christian in the first Idol, Trenyce...however the hell you spell it...